SCSI Internal (2.5 inch) pinout

Pin	Name	Dir	Description
1	+5V		+5 VDC
1	+5V		+5 VDC
1	RET		Return (Ground?)
1	RET		Return (Ground?)
1	GND		Ground
2	DB0		Data Bus 0
1	GND		Ground
4	DB1		Data Bus 1
1	GND		Ground
6	DB2		Data Bus 2
1	GND		Ground
8	DB3		Data Bus 3
1	GND		Ground
10	DB4		Data Bus 4
1	GND		Ground
12	DB5		Data Bus 5
1	GND		Ground
14	DB6		Data Bus 6
1	GND		Ground
16	DB7		Data Bus 7
1	GND		Ground
18	PARITY		Data Parity (odd Parity)
24	GND		Ground
26	TMPWR		Termination Power
32	/ATN		Attention
36	/BSY		Busy
24	GND		Ground
38	/ACK		Acknowledge
40	/RST		Reset
42	/MSG		Message
24	GND		Ground
44	/SEL		Select
50	/I/O		Input/Output
46	/C/D		Control/Data
24	GND		Ground
48	/REQ		Request
1	RET		Return (Ground?)
1	RET		Return (Ground?)
1	+5V		+5 VDC
1	+5V		+5 VDC

Note: Direction is Device relative Bus (other Devices). Connector is: AMP 6-176135.